$A$ : During succession, nutrient availability decreases while biomass level increases.

$R$ : $NCP$ (Net community productivity) remains same during succession.

What is wrong about xerophytes

The graph below shows the changes in two populations of herbivores in a grassy field. A possible reason for these changes is that

Area where succession can take several thousands years to reach climax community is

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct$?$